Boiler for fuel-burning devices



Jan. 22, 1929.

w. w. WILLIAMS BOILER FOR FUEL BURNING DEVIQES Filed July 5, 1924 3 Sheets-Sheet Jan. 22, 1929. l 700 104 w. w. WILLIAMS BOILER FOR FUEL BURNING DEVICES Filed July 5, 1924 5 Sheets-Sheet 2 Z 5 9, JL

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W. W. WILLIAMS BOILER FOR FUEL BURNING DEVICES 5 Sheets-Sheet Filed' July 5, 1924 lllllIlIIlllIIl 1 I lllrglfillull r Patented Jan. 22, 1929.

UNITED STATES PATENT OFFICE.

} WALTER W. WILLIAMS, OF BLOOMINGTON, ILLINOIS, ASSIGNOR-TO WILLIAMS OIL-l O-MATIG HEATING CORPORATION, OF BLOOMINGTON, ILLINOIS, A CORPORATION OF ILLINOIS.

BOILER FOR FUEL-BURNING DEVICES.

Application filed July 5, 1924. Serial No. 724,297.

fashioned in a manner to have increased to a considerable extent the passage ways for the flue gases as well as providing increased contact of the gases with the flue surface by means of multiple fines and projecting stream lined lug members connected with the water sections. i A still further object of my invention is in the provision of a sectional boiler adapted for use in connection with fuel burning devices and fashioned in a manner to have increased efliciency over the conventional types I ofboilerused in connection with such burnin devices.

%)therjobjects of my invention will appear; in connection with annexed specification and claim.

Fig. 1 is a perspective view of the sectional boiler, portions thereof being broken away for a more detailed disclosure, t ere also being shown a conventional fuel burning devlce.

Fig. 2 is a perspective View of one-half of the boiler showin the interior arrangement. Fig. 3 is an en arged detail in perspective y of one of the boiler sections.

Fi 4 is a vertical sectional'view taken on the lines 4-4 of Fig. 3.

Fig. 5 is a sectional view taken on the line 55 of Fig. 4, and

' Fi 6 is a cross-sectional view taken on the hue 6-6 of Fig. 5.

Referrin to the drawings I have shown in perspective in Fig. 1 my sectional boiler in connectionwith a conventional fuel burnin device A.

he so-called domestic fuel burner for house installationhas become so popular that 'rogress beyond the mere perfecting of the burner itself has been made with the aim of increasing the efliciency' of such devices or is obtained in following manner:

rather the efliciency of the boiler or furnace in which they are used.

I The present practice is to install one of these domestic fuel burners in any type of v furnace or boiler that the purchaser happens to own. This practice has been satisfactory to a certain degree, but obviously better results or rather a greater degree of efliciency some types of boilers than others.

The present application is directed to the development of a boiler that has an increased advantage or efficiency over any of the known types of boilers in which fuel burning devices are now being installed. Obviously the boilers into which these domestic oil burners are going were formerly utilizing coal as a fuel. Now the present boiler is not adapted for the use of coal for a fuel and, as a matter of 'fact,would only have a-.high efficiency when a fuel burning device with a force draft was used.

Before describing in detail the present boiler structure, it might be said that when coal is used as a fuel, there is usually no forced draft with the result that a high stack temperature is necessary, hence, a large draIt tube, andfor efliciency, a short passage way for the products of combustion in view of the necessarily stack induced air draft.

Now with the present boiler a high stack temperature is not necessary, nor desired, the stack temperature usually varying between 300 and 400' degrees. The cutting down of the size of the stack is occasioned also by the use ofthe-forced draft and also in View of this forced draft a longer and more restricted passage way for the products of combustion may be made, thereby increasin the radlation surface and hence raising the efficiency of the boiler. Likewise, the multiple flues that can be used, due to the construct1on,per-

mit increased contact of the gases with the boiler surfaces.

I have obtained the above result in the In Fig. 1 a perspective of the boiler is shown wherein a plurality of the boiler sections 10 areconnected together by means of cement, bolts, or other conventional attachment means. These boiler sections are cast hollow in two arts or sub-sections, each part or sub-section eing interchangeable and interconnecting. Each of the boiler sub-seetions is the same, except the front and rear portions. As may be clearly seen, these portions merely have a fiat outside face and are utilized naturally for the purpose of forming the combustion chamber 11- therein between the intermediate sections.

The front section shown in Fig. 1 is fashioned as at 12 to permit the insertion therethrough ofthe projecting end of the fuel burning device and subsequently the filling in around such end by cement or some other substance to inclose the entire front surface of the boiler.

In the various figures of the drawing the details of the sectlons are shown. Fig. 3 for instancefs'howing a perspective view of the side ofra sub-section, said sub-section,

of course, when placed in operative position joining with a similar shaped oppositely disosed sub-section to provide one of the main oiler sections. The sub-section illustrated I in Fig. 3 discloses hollow lateralextensions 10 about the top and side exteriors adapted to engage similar lateral extensions on the next adjacent section to space apart the hollow bodies thereof to form gas flues between the vertical waterlegs of said sub-section and hollow water legs 19 and 19 adapted to meet similar water leg upon the oppositely disosed sub-sections above and below the comustion chamber 11 with the upper water leg terminating in a semi-circular reentrant surface 19 the lower meeting edges of which are provided with a lateral extension 16 on each side of the body similarly extending toward the exterior side and then curved toward the exterior bottom, as at 15, and extending intermediate the exterior and interior sides of the sub-section to form a baffle 14 adapted to engage a similar extension and baffle on the next adjacent section and form a gas flue between said exterior lateral extension 10 and interior lateral extensions 14, 15, and 16 to the central circular flue 20 formed above the combustion chamber by the oppositely disposed reentrant surfaces 19 Referring to Figs. 1 and 5 it may be seen that the combustion chamber 11 is provided with a lining 30 of refractory material, here shown as fire bricks, laid upon the upper surface of the bottom Water leg 19 of the subsections extendin below the combustion chamber and carried upward at each side with the bricking engaging the opposite interiors of the intermediate sections terminating adjacent the under side of the central abutment of the lateral extensions 16, said lateral extensions curving downward, as at 15, out side the bricking 30 conduct the gases arising1 from within the combustion chamber over t e top of the brickin downward between the baflie 14 and bricking and then upward between the baflle 14 and the exterior lateral extensions 10 to the central horizontalcircular flue 20, as shown by the arrows on Fig. 3. The apertures 17 and 18 indicate the inlet and outlet respectively for the-water supply. The semicircular opening 19 in connection with similar portions upon the other sections forms a flue passage way 20 above the combustion chamber to which a stack 21 is connected and the abutting of the lower horizontal portions of the opposite sections forms a water leg 19 beneath the combustion chamber. The series of projecting stream lined lugs 22 may be seen disposed in the passage way for the products of combustion. These lugs are fashioned in the stream lined manner for the purpose of keeping-the products of combustion in the best possible contact with the heating surface while retarding the speed thereof to a less degree than any other shape of projection that might be used. c

Obviously the opposite side of the boiler section shown in Fig. 3 is exactly the same as that described.

Referring now to Fig. 5, this sectional view shows the interior or water portion of the boiler section.- In this view it may be seen that the stream lined lugs are formed integrally with the water section and the water normally fills these lugs. Again, a baffle 23 is shown, said bafile being merely an extension of the before described baflle 14 except that there is no curved or longitudinal portion. It will be remembered that the passage of the products of combustion through the gas flues was in a downward then upward manner. The circulation of the water in the boiler section follows the course of the arrows shown in Fig. 5. In other words, the water near the hot side, or rather, the side adjacent the combustion chamber will rise, but after passing the upper end of the baffle will begin to cool and hence take a downward movement as shown by the arrows, until the heat again affects this water, whereupon the flow will again be upward upon the inside of the the combustion chamber which absorbs the heat formerly dissipated through the floorof the ash pit of the usual coal burning furnace. In addition, a water jacket extends down the whole front and back, through the front and rear boiler sections so that no opportunity is lost to utilize all of the heat generated in the combustion chamber.

Inasmuch as the forced draft of the fuel burning device to force the products of combustion through the flue passage ways to the draft pipe has been described, no further description of the operation of the boiler is thought necessary, except that particular. attention be drawn to not only the increased length and restriction of the flue passage ways and the plurality of stream lined heat absorbing lugs therein, but also to the multiplicity of flue ways.

The present application is directed to the boiler, but in view of the close relationship of the boiler and fuel burning device, a brief description of said device will be given.

I have shown merely a conventional fuel burning device and it is clear that any type of fuel burning device utilizing a forced draft might be used. The present draft ar rangement upon the fuel burning device shown is a fan member 25 contained in a housing 26, the blast therefrom being projected through the tube 27 and finally into the combustion chamber of the boiler.

In view of the state ofthe art of domestic fuel burning devices, no further description of the device described is thought necessary other than to say that fuel is pumped from a tank 28 through appropriate strainer mech anism, etc., by means of an electrical power member 29, said fuel finally being discharged in the form of a spray through a nozzle disposed adjacent the combustion end of the draft tube.

Naturally these fuel burning devices have many systems of controls, but inasmuch as the present invention has nothing to do with the fuel burningdevice other than to disclose the fact that a forced draft is utilized, no such disclosure of intricate control mechanism is thought necessary.

What I claim is:

A boiler. for liquid fuel burning devices comprising a hollow front and back section with a plurality of hollow interchangeable, interconnecting, intermediate sections .arranged therebetween'and connecting thereto,

each said intermediate section formed of similarly reversable interchangeable subsections having hollow vertical water legs and hollow lateral extensions about the top and side exteriors adapted to engage similar lateral extensions on the next adjacent section to space apart the hollow bodies thereof to form gas flues between the vertical water legs of said sub-sections, each of said sub-sections having horizontal water legs meeting above and below a combustion chamber with the upper water leg terminating in a semi-circular re-entrant surface, the lower meeting edges of which are provided with lateral extensions on each side of the body similarly extending toward the exterior side and then curved toward the exterior bottom intermediate the exterior and interior sides of each section adapted to engage a simliar lateral extension on the next adjacent section and form a gas flue between said exterior and interior lateral extensions to the central circular flue formed above the combustion chamber, and a refractory lining upon the upper surface of said bottom water leg below the combustion chamber continuing upward against the opposite interiors of the interme- 'diate sections terminating adjacent the underside of the lateral extensions of the sections below the curved edges of the central abutments, whereby the gases arising from within the combustion chamber over the top of said refractory lining pass downward between said lateral extensions and lining and thence upward between the interior and exterior side and top lateral extensions to the central horizontal circular flue.

In testimony whereof, I have alfixed my signature.

WALTER W. WILLIAMS. 

